Window-screen.



E. GRAUPNBR.

wINDoW SCREEN.

APPLIOATION FILED APR. 23, 1909.

933,975. Patented sepn 14,19o9.

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ANDREW, a. GRAHAM om Pl-lovd-uwoamn-lzns,)wsmmmm D. c4

inviini) sinins is ERNEST GRAUPNER, OF PHILADELII-IIA, PENNSYLVANIA.

WINDOW-SCREEN.

To all whom it may concern:

Serial No. 491,747.

1 in` openings in the bars, and extend across Be it known that I, ERNESTGRAUPNER, a I said openings, with the screw threaded opencitizen of theUnited States, residing at Philadelphia, in the county ofPhiladelphiaand State of Pennsylvania, have invented certain new and usefulImprovements in l/Vindowcreens, of which the following is aspecification.

My invention relates to an improved window screen, the object of theinvention being to provide a screen which will absolutely prevent theentrance of insects when the screen is in position in the window, andwhich may be adjusted to lit various sizes of Window frames. v

Vith these and other objects in view, the invention consists in certainnovel features of construction, and combinations and arrangements ofparts as will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings, Figure 1, is a view in elevationillustrating my improvements. Fig. 2, is a view in vertical section ofFig. l. Fig. 3, is a view in elevation of the outer face of the screen.Fig. 4, is a view in section on the line 4 4 of Fig. 3, and Fig. 5, isan enlarged vertical section through the meeting horizontal bars of thesashes.

1 represents an ordinary window frame,

and 2 and 3 the upper'and lower sashes respectively, mounted to slide insaid frame. To absolutely prevent any entrance of flies or other insectsbetween-the sashes when the lower sash is raised, a strip 4 is securedto the lower face of the cross bar of the upper sash, and provided witha flexible apron 5 preferably of rubber or similar material, bearingagainst the glass of the lower sash, so as to prevent any entrance ofinsects walking up the outer face of the glass of the lower sash.

6 represents the rectangular frame of my improved screen, which may bemade of wood or other material, and to the outer face of which the wirenetting 7 is secured, and held by means of thin metal strips 8,perforated to receive screws or other fastening devices 9, and securelyhold the netting against the frame and form a continuous smooth surfaceto bear against the inner sash and exclude insects, where said sashcontacts with the screen. The vertical side bars of frame 6 are providedwith openings to receive set screws 10, and nuts 11 are inserted ings insaid nuts registering with the screw receiving openings in the bars, andsaid set screws engage in the threads in the nuts, and are provided attheir outer ends with swiveled friction blocks 12 preferably of rubber,so that when thescrews are forced outward, they will engage the windowframe and securely hold the screen in the window.

`To prevent any entrance of insects at the sides of the screens, Iprovide the screen with metal strips 13. These strips are ofapproximatelythe height of the screen, and are located against the innerface of the screen, and are held by screws 14 located in slots 15 in thestrips 13, so as to hold the strips at the proper adjustment to closethe space between the edge of the screen and the frame. The upper endsof these strips 13 are bent at right angles as shown at 16, to overlapthe upper edge o f the screen, and prevent the entrance of insects atthis point.

It will thus be observed that the screen is capable of considerableadjustment to it different widths of window frames, and will at anyadjustment absolutely exclude insects.

Various slight changes might be made in the general form and arrangementof parts described without departing from my invention, and hence I donot restrict myself to the precise details set forth, but considermyself at liberty to make such changes and alterations as fairly fallwithin the spirit and scope of the claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a window screen, the combination with a rectangular frame, nettingsecured to said frame, set screws mountedin the vertical bars of saidframe, metal strips secured to the vertical bars of said frame andmounted to move laterally, means for clamping said strips at variouslateral adjustments relative to the screen, and the upper ends of saidstrips bent across the upper edge of the screen frame, substantially asset forth.

2. In a window screen, the combination with a rectangular frame, a wirenetting located against the outer face of said frame, metal stripssecured to the outer face of the frame and overlapping the edges of thenetting, set screws in the vertical members of said frame, adapted toengage a window frame and secure the screen in position,

Patented Sept. 14, 1909.l

therein, of a screen, nuts inserted in the Vertical side bars of saidscreen, set screws sup-V ported in. said nuts and adapted to. engage thewindow frame and secure theV screen in place, strips adjustably securedto said vertical members of the screen and adapted to bers and the frameand the upper ends of said strips bent across the upper edge'of thescreen `frame, a strip secured to the lower Vclose the. space betweensaid vertical mein 15 cross bar of the upper sash, and aklexible apronVsecured to said strip and engaging the glass of the lower sash. Y

` In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

Witnesses: Y

R. H. KRENKEL, J. A. L. MUM-TALL. Y

ERNEST GRAUPNER. Y'

